#define _CRT_SECURE_NO_WARNINGS 1
#pragma once
#include<stdio.h>
#include<stdlib.h>
#include<assert.h>
#include<string.h>
typedef char STDtype;
typedef struct stack
{
	STDtype*array;
	int top;
	int capacity;
}stack;
void stackinit(stack* ps);
void stackdestroy(stack* ps);
void stackpush(stack* ps, STDtype x);
void stackpop(stack* ps);
char yunsuanfubijiao(char a, char b);
int yunsuan(int num1, int num2, char yunsuanfuhao);